My Plant needs HELP.!!

Well first im gonna start sayin that im a noob doing this...second is that this is the first time im trying to grow something, so thats why this is so important to me, now the fall/winter is coming and something that i know for sure is that snow is not healthy for plants, besides i've been reading that is better when u have at least a couple of plants, in my case is just one... since it was a gift from a friend.
I've been with the plant for about 10 weeks and i started noticing some problems.
the first thing i've notice is that the leaves in the bottom turns yellowish with the edge black then rite after they fall, second is that is has alot of small yellow dots on the leaves, third is that i did some reading over the internet and everyone mentions lil white hair coming out of the lil dubs but mine is not white but brownish..
final is that i will love to know if my plant has some future or is just a waste of time....
if anyone has any advice pls feel fre to answer, all comments are welcome....

i didnt even use any fertilize .... just soil that i bought from home depot...?

Dude one of them is a male.

And it's got spider mites

so there is no way to save it?....this is sad, so sad !

at least the lil dubs can be saved ?? at least can i save something from it? otherwise im gonna have to start all over.

trash it bro. your in a gay dude strip club BALLZ OUT

and look at it like this you now know what a male plant looks like. so you learned something from it. start over, get ya some good seeds plant a few , that way you got a better chance of gettin atleast 1 female. and snow and MJ dont mix. do a little more research and maybe try a indoor grow.

ya straight male kinda gross. i would stay chop it down and cook it but thats kinda gross with the mites but its up to you